About 30% of people who died from floods and landslides “outside the scope of danger assumptions” November 12, 22:08
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It was found that about 30% of people who died from flood damage and landslides caused by Typhoon No.19 were presumed to have been sacrificed in places that had not been assumed to be dangerous by hazard maps. Many people were involved in inundation of small and medium-sized rivers without inundation assumptions, and experts said, “It is necessary to proceed with the development of hazard maps, but it is difficult to implement in all rivers, and know the features of the topography. "Preparing for everyday use is important."
27 people died outside "inundated areas" and "landslide disaster hazards"
NHK will investigate the location and situation of 92 people who have been confirmed dead in Typhoon No. 19 and will be inundated by flooding the river with Professor Ushiyama of Shizuoka University who is familiar with evacuation behavior in the event of a disaster. We analyzed the relationship between the “presumed inundation area” and the “land disaster hazard point” where there is a risk of earth and sand disaster.
As a result, it was found that 27 out of 79 people who died due to flood and landslide disasters were thought to have been damaged in advance in a place where there was no risk of flooding or landslide disasters. It was.
By disaster,
▽ 17 floods,
▽ Sediment disaster was 10 people.
Twenty-seven people died outside areas such as the “inundated area” and “land hazards”.
By prefecture,
▽ Miyagi Prefecture 12 people,
▽ Six people in Fukushima Prefecture
▽ Gunma and Kanagawa prefectures,
▽ One person each in Nagano, Shizuoka and Iwate prefectures.
Nine of the 12 people in Miyagi Prefecture were victims of flood damage, and there were many cases of damage around small and medium-sized rivers where there was no assumption of inundation. In Takeya, Marumori-cho, the Shinbu River, a tributary of the Abukuma River, flooded many houses and two men each died on the first floor of the house.
In Fukushima Prefecture, 5 out of 6 people were victims of flood damage, and they were damaged around small and medium-sized rivers that were not inundated.
Three people in Gunma Prefecture were all victims of a landslide disaster, and a landslide disaster occurred on a gentle slope that was not designated as a “landslide disaster hazard”.
Three people in Kanagawa Prefecture are flood victims and two victims of landslide disasters.
Shizuoka Prefecture and Nagano Prefecture were both victims of flood damage.
In Iwate Prefecture, one person was killed in a road collapse caused by a sediment disaster.
Expert “Maintenance of hazard map It is important to understand the features of topography”
Professor Ushiyama said that there are many cases where there is no inundation assumption in small and medium-sized rivers, and `` We will continue to develop hazard maps, etc. It ’s important to understand. ”
On the other hand, 52 people, or 70%, seemed to have suffered damage in the area where danger was presumed in advance and its “nearby”, and Professor Ushiyama said, “The usefulness of the hazard map has been shown anew. It is important to connect to evacuation behavior at the place. "